228 . 



BOTANICAL GAZETTE 



[SEPTEMBER 



GENERAL CONCLUSIONS 



An examination of all the graphs showing the range of soil mois- 

 ture, as well as a general consideration of the conditions of growth 



Fig. 26. — Graphs showing the average range of the soil moisture in the edaphic 



coefficients represented by broken lines (after Harvey). 



lin 



in these associations, indicates that only during midsummer is there 

 any scarcity in the supply in any of the habitats. It has seemed 

 desirable, therefore, and even more necessary than in the evapora- 



